天文学家发现了一个看不见的隐形星系,这有可能帮助人类解开宇宙中最大的奥秘。这个隐形星系似乎主要由暗物质构成。暗物质是一种不可见的物质,人类还没有掌握它的特性。理论家在很久以前就相信,暗物质大约占宇宙物质能量总和的23%。普通物质,如构成恒星、行星和人类自身的物质,则只占4%。宇宙的其它部分由一种甚至更为神秘的“暗能量”驱动。暗物质的存在,理论上可以解释为将普通星系及大的星系群约束在一起的引力来源,这种引力大于万有引力。 Astronomers have discovered an invisible invisible galaxy that may help humans unravel the mysteries of the universe. This invisible galaxy appears to be mainly composed of dark matter. Dark matter is an invisible substance that humans have not yet mastered. Theorists have long believed that dark matter accounts for about 23% of the total energy of the universe. Ordinary substances, such as those that make up stars, planets, and humans, make up only 4%. The rest of the universe is driven by an even more mysterious “dark energy.” The existence of dark matter can theoretically be interpreted as a source of gravitational force that confines common galaxies and large galaxy groups together. This gravitational force is greater than gravitation.